0 0 votes An infinitely long uniform solid wire of radius $a$ carries a uniform dc current of density $\overrightarrow{j}$. The magnetic field at a distance $r$ from the center of the wire is proportional to $r$ for $r\lt a$ and $\frac{1}{r^2}$ for $r\gt a$ $0$ for $r\lt a$ and $\frac{1}{r}$ for $r\gt a$ $r$ for $r\lt a$ and $\frac{1}{r}$ for $r\gt a$ $0$ for $r\lt a$ and $\frac{1}{r^2}$ for $r\gt a$ Electronic Devices gate2012-ec carrier-transport electronic-devices + – Milicevic3306 375 views answer comment Share Follow Add Sync Questions Print 0 reply Please log in or register to add a comment.